16. If a host on a network has the address 172.16.45.14/30, what is the subnetwork this host belongs to?

A. 172.16.45.0
B. 172.16.45.4
C. 172.16.45.8
D. 172.16.45.12

17. Using the following illustration, what would be the IP address of E0 if you were using the eighth subnet? The network ID is 192.168.10.0/28 and you need to use the last available IP address in the range. The zero subnet should not be considered valid for this question.

A. 192.168.10.142
B. 192.168.10.66
C. 192.168.100.254
D. 192.168.10.143
E. 192.168.10.126

18. Which configuration command must be in effect to allow the use of 8 subnets if the Class C subnet mask is 255.255.255.224?

A. Router(config)#ip classless
B. Router(config)#no ip classful
C. Router(config)#ip unnumbered
D. Router(config)#ip subnet-zero

19. Using the illustration from the previous question, what would be the IP address of S0 if you were using the first subnet? The network ID is 192.168.10.0/28 and you need to use the last available IP address in the range. Again, the zero subnet should not be considered valid for this question.

A. 192.168.10.24
B. 192.168.10.62
C. 192.168.10.30
D. 192.168.10.127

20. What is the subnetwork address for a host with the IP address 200.10.5.68/28?

A. 200.10.5.56
B. 200.10.5.32
C. 200.10.5.64
D. 200.10.5.0